HackerNews Summary (2023-05-15 05PM)

Source: mitsuhiko/self-replace: Utility library that helps to implement processes that replace themselves

Summary
Self-replace crate allows for self-updating or uninstalling of single-executable utilities on both Unix and Windows systems.

Facts

💻 Self-replace is a crate used for implementing self-updating or self-uninstalling features in single-executable utilities.

👋 It can uninstall binary through self_delete method.

🔄 For updating, it can replace the binary with a new version using self_replace.

🖥️ This crate is specifically useful on Windows systems, which require some hacks for such operations.

🔗 You can find more information, along with license details, on the Self-replace crate on its official links.

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Source: Capillaries

Summary
Incremental computing allows separate runs of data processing pipeline that can be re-run independently when needed.

Fact

🔄 Allows splitting data processing pipeline into separate runs that can be started independently

🔁 Enables re-running pipeline when needed

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Source: Many soft contact lenses in US made up of PFAS, research suggests

Summary
Soft contact lenses contain high levels of PFAS “forever chemicals”, specifically fluoropolymers, which are used to resist water, stains, and heat. A recent study tested 18 popular brands of contacts, finding that they contained between 105 ppm to 20,700 ppm of organic fluorine. These chemicals have been linked to serious health issues, such as cancer and autoimmune disorders.

Fact

💊 Soft contact lenses in the US are largely made of fluoropolymers, which are PFAS “forever chemicals”.

💉 Testing of 18 popular contact lenses found high levels of organic fluorine, a marker of PFAS, in each of them.

🩺 PFAS are linked to various serious health issues including cancer, fetal complications, liver and kidney disease, and autoimmune disorders.

👁 It has not yet been studied how much PFAS are absorbed by the eyes when using contact lenses made with this chemical.

🧪 The highest amounts of organic fluorine were found in Alcon Air Optix (No Hydraglide) for Astigmatism, Alcon Air Optix Colors with Smartshield Technology, and Alcon Total30 Contact Lenses – ranging from 20,000 ppm to 20,700 ppm.

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